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Finding the Fourth Proportional to 161,899.98, 242,702.95 and 56,661.54

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Solution

The fourth proportional to 161,899.98, 242,702.95 and 56,661.54 is: 84,940.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,899.98 : 242,702.95 = 56,661.54 : x
  2. Step 2: Convert to fraction form
    161,899.98/242,702.95 = 56,661.54/x
  3. Step 3: Cross multiply
    161,899.98x = 242,702.95 × 56,661.54
  4. Step 4: Simplify right side
    161,899.98x = 13,751,921,963.99
  5. Step 5: Solve for x
    x = 13,751,921,963.99/161,899.98
  6. Step 6: Final answer
    x = 84,940.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.